I agree with Dave, the Electric Blue is not too much. The Twilight Blue is stunning in bright sunlight but is quite dark in less light. Both blues were in our top four choices when we had to make the final decision.
I took some
color calibrated photos of the color blocks at the LA store when we were deciding. They should be pretty close to right if your monitor is color calibrated, but still don't convey the richness of each color.
From the photos you can see how Twilight Blue changes radically with view angle even in the same light. In bright light, this highlights the contours of the car in a way that has to be seen in person to appreciate.
Ours is Radiant Red, which I love, but is the most popular Roadster color. By itself, it stands out wonderfully, but when you're gathered with a dozen other Roadsters and over half are the same Radiant Red the reds all blend together. I even came close to getting into the wrong car on one occasion.
I believe Electric Blue is the second-most popular color.